Lock and key



2 SheetsSheet 1 E. J. COLBY.

LOOK AND KEY.

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(Model. 2 Sheets-Sheet 2 E. J. COLBY.

. LOOK AND KEY. No. 354,097. Patented Dec. 14, 1886.

UNITED STATES PATENT OFFICE.

EDWARD J. COLBY, OF CHICAGO, ILLINOIS.

LOCK AND KEY.

SPECIFICATION forming part of Letters Patent No. 354,097, dated December 14, 1886.

Application filed February 6, 1886. Serial No. 100,998. (Modem To all whom it may concern.-

Be it known that I, EDWARD J. COLBY, a citizen of the United States, residing at Ohicago, (look county, Illinois, have invented certain new and useful Improvements in Locks and Keys, of which the following is a specification.

My invention relates to or can be applied to all kinds of locks, and has for its objects to provide a new tubular key with extensible bits, and a lock-with a central bolt-actuating barrel, the key and barrel co-operating to make a safe and simple and cheap look. I attain these objects by the mechanism illustrated in the accompanying drawings.

Figure 1 is a plan view of a trunk-lock,with side of case removed and containing my invention. Fig. 2 is a section through same. Fig. 3 is a plan View of the face-plate. Fig. 4. is a side view of same. Fig. 5 is a plan of barrel with faceplate removed. Fig. 6 is a section of the key. Fig. 7 is a side view of a keyhole latch; Fig. 8, a section of same; Fig. 9, an end View of same, Fig. 8; Fig. 10, an end view of parts, as in Fig. 7. Fig. 11 is an end view of the key. Fig. 12 is a View of my invention as applied to a different kind of a lock.

Like parts are indicated by the same letter.

A is the case; B, the bolt; 0, the catchaperture; D D, the guideapertures; E E, boltguides; F, a central barrel pivoted in the case so as to rotate. G is a pivoted tumbler flexibly held by the spring H and adapted to engage the slots I and K in the rim of the barrel, as shown.

J is 2. lug to limit the throw of the tumbler.

L is a permanent dog on the barrel. M is a retreating dog on the same, pivoted and flexibly held by the spring R.

N N are slots in the bolt to receive the dogs.

0 is a spiral spring secured at one end to the barrel and at the other to the face-plate K.

K is a lug on the face-plate; K, a slot in the same; P, an inner lug on the barrel; K a central stem to engage the end of the key and guide the same.

S is a pin which limits the movement of the face-plate, and S is a pin which engages the end of the spring 0.

A is the aperture in the face of the lock.

1 is a keystem. 2 and 3 are bits pivoted thereto, and having respectively the irregular end 9 and the plain end 10, said bits adapted to pass through the apertures 8 8.

6 is a spiral spring encircling the .stem'and bearing on the shoulders 13 and 14.

7 is a tube. 4 is a slot in the stem, and 5 is a pin passing therethrough to hold the parts together.

11 is a slot in the lower end of the tube. The tube could be of any length, have any number of slots, apertures, and bits arranged in any desired manner.

a is a feather rigidly secured to the part d.

b is a stem having the bit a rotating on the part d, and at its upper end it has the raised annulus g with the slot or recess j and the bridge h.

f is a tumbler pivoted to the part cl, and held by a spring, t. Thekey-hole is e. In this case the key has two slots, as shown in Fig. 11, and when it is inserted and turned it raises the tumbler and then rotates the stem. This device can be used to close and secure the keyholes of ordinary locks.

Fig. 12 shows a modification, in which the parts are as follows: A is the case. B is the bolt; G the tumbler; H its spring; F, the barrel withonttace-plate or spring-dog; If, the dog; P, the inner lug.

The use and operation of lny invention are as follows: The parts are put together as shown in the drawings. The bolt is thrown into place so as to lock the article to which it is attached. The parts are then at rest. The tumbler is in the slot in the barrel, so as to arrest its motion, and if moved it cannot shoot the bolt because the springdog is so far retreated as not to engage the bolt. To shoot the bolt will require a key, which will throw the tumbler out of the slot, but not far enough to engage the secondary slot and at the same time to throw out the spring-dog. The key must also have a slot to engage the lug on the face-plate, and its bits must emerge at such an angle as will permit them to engage the dog and tumbler when the slot passes downward on the inner lug. A permanent dog or tooth on the barrel may be used with or substituted for the spring-dog. The tumbler may be compound, as shown, in which case the bit The key is inserted, the slot engages the lug on the face-plate, the key is then turned until the lugs on the face-plate and the inner lug fall into the same line, and the key is then pushed in and pressure applied to its outer end. By this action the extensible bits are thrown out, thereby throwing out the dog and releasing the barrel from the compound tumbler. The key and barrel are then turned around and the bolt thus operated. Some of the features shown could be dispensed with and modifications made.

I claim as my invention and desire to sew cure the following:

1. In a lock, the combination of a case, a bolt, a central barrel, and a bolt-actuating dog carried-thereby, with a spring adapted to hold said dog within the barrel when out of use.

2. In a lock, the combination of a case, a

bolt, and a central barrel having a recess in its outer surface, and a tumbler pivoted to the case and adapted to engage the recess and arrest the barrel.

3. In a lock, the combination of a case, a bolt, a tumbler pivoted to the case and adapted to engage the barrel, and a barrel carrying a retreating bolt-actuating dog and slotted to receive the dog and release thetumbler.

4. In a lock, the combination of a case, a bolt, a rotating barrel and a dog carried thereby and adapted to engage and operate the bolt, and a lug on the inner end of said barrel to engage the key.

5. In a lock, the combination of a case, a bolt, and a centrally-pivoted barrel having a lug and a rotating face-plate thereon, said faceplate being provided with a lug which can be brought into line with the lug on the barrel by rotating said plate.

6. A tubular key having extensible bits with irregular outlines, as shown.

7. The combination of atubular key-having extensible hits, a lockcase,a bolt, and arotating barrel having a key-lug and a retreating dog, so that by inserting and rotating the key the dog is thrownout and the barrel is rotated to move thebolt.

8. The combination of atubular key having slots in the end of the tube and extensible bits, with a lock having a case, a bolt, and'a rotating barrel, which is provided with a faceplate, an inner lug, and a spring retreating dog, and a tumbler pivoted to the case and adapted to engage and arrest the barrel.

EDWARD J. COLBY. WVitnesses:

FRANCIS W. PARKER, WILLIAM F. WIEMERS. 

